R3400 Technical data - Rendamax

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Rendamax 35 - 36 Calorifier temperature sensor*. After a suitable sen sor has been connected it will be automatically re cognised when the power supply voltage is switched on. The terminals 34 - 35 must not be intercon nected. The purpose of this function, in comparison with the calorifier thermostat, is to make possible a night time temperature reduction and an anti- legionel la switching (only with BME, E6 or KKM). 37 - 38 External influence (2 - 10 VDC = +10°C - +90°C)*. At voltages below 2 V the boiler will switch to “con stant supply temperature operation”. 39 - 40 Output capacity signal*. This signal provides infor mation for a capacity display. 0-100 % = 0-10 VDC. The maximum current is 0.5 mA. For higher currents or long connecting wires (›5 m) the use of a signal amplifier is recommended. 41 - 42 Bus connection. 43 - 44 Primary boiler pump control (0-10 Vdc) (not applica ble for R3400 series boilers) y * In order to avoid faults caused by inductive currents, static electricity or high frequency signals, the use of screened cables is necessary. 5.3.3 Water connections The appliance must be installed by a recognised installer in accordance with the applicable national and local specifications and regulations. The flow and return connec tions are made at the rear of the unit. Supports for water connections It is recommended that the flow and return pipes be properly supported. This will avoid damage through overloading (weight) and simplifies maintenance. Fig. 17 Support The R3400/R3500/R3600 units are constant water flow appli ance and are suitable for use in both open vented (non-pres surised) systems and sealed (pressurised) systems provided the minimum pressure requirements, as per table 14, are met. The unit is fitted with a boiler pump as standard and which guarantees the required water circulation throu gh the boiler. The capacity and working head of the pump is sufficient to overcome both the resistance of the boiler and some resistance offered by the system. w The boiler pump is however not a system pump If the resistance of the system exceeds the available working head, the boiler will be shut down by the flow switch. In order to prevent this happening, the length and diameter of the primary pipework between the boiler and the low velocity header must be chosen such that the remaining working head of the pump (see table 12) will not be exceeded. It is recommended that manually operated valves be fitted between the water connections and the installation. Doc890/3456CV02B 29
Rendamax w In order to limit the losses occurring in a non-operational boiler, a motorised valve is sometimes fitted in the flow or the return pipe or a mechanical non-return valve is used for this purpose. Standby losses can be reduced even further by shutting down the boiler via the “boiler enable” terminals. A properly dimension ed low velocity header ensures that the natural flow through the boiler can be neglected. 5.3.4 Combustion air supply 5.3.4.1 General The unit can optionally be supplied as a room sealed appli ance. This simplifies the possibilities for installation within the building. Guide lines and installation instructions The flue gas discharge and the air supply systems must be installed by a recognised installer in accordance with the appli cable national and local specifications and regulations. The total resistance of the air supply and the flue may not result in a pressure drop exceeding 1.5 mbar. If the unit is used as a room sealed appliance, open Tees or draught stabiliser are not permitted. 5.3.4.2 Air supply pipe The air supply pipe may be single-walled and constructed of: - plastic - thin-walled aluminium - flexible aluminium (take account of the resistance). Fig. 18 Horizontal air supply Type Air supply diameter (mm) X (mm) Y (mm) D1 D2 R3401 R3402 R3403 R3404 R3405 R3406 R3501 R3502 R3503 R3504 R3505 R3601 R3602 R3603 R3604 R3605 250 300 300 300 355 355 355 239.5 239.5 289.5 239.5 239.5 289.5 233.5 359 359 266 266 266 266 266 Table 8 Air supply connection 30 Doc890/3456CV02B
Page 1 and 2: Rendamax Technical documentation R3
Page 3 and 4: Rendamax Contents R3400 Technical d
Page 5 and 6: Rendamax R3400 Technical data Type
Page 7 and 8: Rendamax Type R3401 R3402 R3403 R34
Page 9 and 10: Rendamax 1.5 General restrictions T
Page 11 and 12: Rendamax 2.2 Main components 1 Retu
Page 13 and 14: Frame [14] The frame is constructed
Page 15 and 16: Rendamax Modification Modifications
Page 17 and 18: Rendamax Lifting The figure below s
Page 19 and 20: Rendamax w R3600 only 3 rd Heat exc
Page 21 and 22: Rendamax 5 Installation 5.1 Regulat
Page 23 and 24: Rendamax The gas connection is made
Page 25: Rendamax BME (option) This is a wea
Page 29 and 30: Rendamax Fig. 21 Distance between a
Page 31 and 32: Rendamax chimney suspension draugt
Page 33 and 34: Rendamax Type Diameter in mm ζ=1 E
Page 35 and 36: Rendamax Type ∆T 20 K Pump data N
Page 37 and 38: Rendamax Type UPS 65-120F R3401 - R
Page 39 and 40: Rendamax In order to guarantee a we
Page 41 and 42: Rendamax When two appliances are sw
Page 43 and 44: Rendamax Operating mode (cover clos
Page 45 and 46: Rendamax 6.5 Start-up 1 Open the ga
Page 47 and 48: Rendamax Measure the gas pressure a
Page 49 and 50: Rendamax 8.5 Cleaning the filter/sc
Page 51: Rendamax meg/l °dH °f °e mg CaCO

R3400 Technical data - Rendamax

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